package com.atguigu.yygh.user.api;

import com.alibaba.fastjson.JSONObject;
import com.atguigu.yygh.common.helper.JwtHelper;
import com.atguigu.yygh.common.result.Result;
import com.atguigu.yygh.model.user.UserInfo;
import com.atguigu.yygh.user.service.UserInfoService;
import com.atguigu.yygh.user.utils.ConstantWxPropertiesUtils;
import com.atguigu.yygh.user.utils.HttpClientUtils;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;

@Controller
@RequestMapping("/api/ucenter/wx")
public class WeixinApiController {
    @Autowired
    private UserInfoService userInfoService;
    //生成微信扫描二维码
    //返回生成二维码需要参数
    @GetMapping("getLoginParam")
    @ResponseBody
    public Result getQrConnect(){


            Map<String, Object> map = new HashMap<>();
            map.put("appid", ConstantWxPropertiesUtils.WX_OPEN_APP_ID);
            map.put("scope", "snsapi_login");
            String wxOpenRedirectUrl = ConstantWxPropertiesUtils.WX_OPEN_REDIRECT_URL;
//            wxOpenRedirectUrl=URLEncoder.encode(wxOpenRedirectUrl,"utf-8");
            map.put("redirect_uri",wxOpenRedirectUrl);
            map.put("state", System.currentTimeMillis()+"");
            return Result.ok(map);



    }
    //回调方法，得到扫码人的信息
    @GetMapping("callback")
    public String callback(String code,String state){
        //获取临时票据
        System.out.println("code:"+code);
        //获取两个返回值
        //使用code和appid以及appscrect换取access_token
        StringBuffer baseAccessTokenUrl = new StringBuffer()
                .append("https://api.weixin.qq.com/sns/oauth2/access_token")
                .append("?appid=%s")
                .append("&secret=%s")
                .append("&code=%s")
                .append("&grant_type=authorization_code");

        String accessTokenUrl = String.format(baseAccessTokenUrl.toString(),
                ConstantWxPropertiesUtils.WX_OPEN_APP_ID,
                ConstantWxPropertiesUtils.WX_OPEN_APP_SECRET,
                code);
        //使用httpclient请求地址
        try {
            String accesstokenInfo = HttpClientUtils.get(accessTokenUrl);
            System.out.println("accesstokenInfo:"+accesstokenInfo);
            //获取两个值

            JSONObject jsonObject = JSONObject.parseObject(accesstokenInfo);
            String access_token = jsonObject.getString("access_token");
            String openid = jsonObject.getString("openid");

            //判断数据库是否存在微信扫码人的信息
            UserInfo userInfo=userInfoService.selectWxInfoOpenId(openid);
            if(userInfo==null){
                //拿着两个值，获取扫码人信息
                String baseUserInfoUrl = "https://api.weixin.qq.com/sns/userinfo" +
                        "?access_token=%s" +
                        "&openid=%s";
                String userInfoUrl = String.format(baseUserInfoUrl, access_token, openid);
                String resultInfo = HttpClientUtils.get(userInfoUrl);
                System.out.println("resultInfo:"+resultInfo);
                //解析用户信息
                JSONObject resultUserInfoJson = JSONObject.parseObject(resultInfo);
                String nickname = resultUserInfoJson.getString("nickname");
                String headimgurl = resultUserInfoJson.getString("headimgurl");

                //信息添加到数据库
                 userInfo=new UserInfo();
                userInfo.setNickName(nickname);
                userInfo.setOpenid(openid);
                userInfo.setStatus(1);
                userInfoService.save(userInfo);
            }



            //返回信息
            Map<String,String> map =new HashMap<>();
            String name = userInfo.getName();
            if(StringUtils.isEmpty(name)) {
                name = userInfo.getNickName();
            }
            if(StringUtils.isEmpty(name)) {
                name = userInfo.getPhone();
            }
            map.put("name", name);
            if(StringUtils.isEmpty(userInfo.getPhone())) {
                map.put("openid", userInfo.getOpenid());
            } else {
                map.put("openid", "");
            }
            String token = JwtHelper.createToken(userInfo.getId(), name);
            map.put("token", token);

            //跳转到前端页面当中
            return "redirect:" + ConstantWxPropertiesUtils.YYGH_BASE_URL + "/weixin/callback?token="+map.get("token")+"&openid="+map.get("openid")+"&name="
                    +URLEncoder.encode(map.get("name"),"utf-8");


        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }

    }
}
